Home / 2,078.32-2,868.55-1,415.44

Finding the Fourth Proportional to 2,078.32, 2,868.55 and 1,415.44

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Solution

The fourth proportional to 2,078.32, 2,868.55 and 1,415.44 is: 1,953.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,078.32 : 2,868.55 = 1,415.44 : x
  2. Step 2: Convert to fraction form
    2,078.32/2,868.55 = 1,415.44/x
  3. Step 3: Cross multiply
    2,078.32x = 2,868.55 × 1,415.44
  4. Step 4: Simplify right side
    2,078.32x = 4,060,257.66
  5. Step 5: Solve for x
    x = 4,060,257.66/2,078.32
  6. Step 6: Final answer
    x = 1,953.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.